As an alternative to VP chips, you can track scoring with these printable score sheets (much like Agricola or 7 Wonders). We have found this method to be much faster and easier.
Changes in v.2: Includes support for 6 players, and shading changes for easier distinction between airline colors when scoring.
Changes in v.3:
Added in scoring bonus based on player position.
Added in second "Airline" column on the right for easier scoring.